.W_gotop {
    position: fixed;
    _position: absolute;
    bottom: 50px;
    display: block;
    width: 40px;
    height: 80px;
    padding-top: 5px;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    opacity: 0.6;
}
#W_btn_a {
    background: #FD0A00;
    border: 1px solid #f77c3d;
    color: #fff;
    box-shadow: 0px 1px 2px rgba(0,0,0,0.25);
    padding: 23px 14px 2px 10px;
    white-space: pre-line;
    display: inline-block;
    border-radius: 2px;
    height: 54px;
    line-height: 16px;
    /* text-decoration: none; */
    font-size: 13px;
    width: 10px;
    text-align: center;
    outline: none;
    margin-left: -12px;
}